According to the statistics of the National Transportation Safety Administration, using seat belts in cars can save1.20 thousand lives a year. Considering that more than 40,000 people die in traffic accidents every year in the United States, the figure of 1.2 million is quite impressive. Among those who died, 1/8 was the teenagers below 19-more than 5,000 people died a year, but the proportion of children who died because of school bus accidents was extremely low-1999-2000, and the average annual death toll was only 10.2. A paper published by the National Research Council in 2002 pointed out that walking, cycling and taking a private car to school are more risky than taking a school bus. Liz NeiBoehlert, from the National Transportation Safety Administration, said that the seats of the school bus are very tight and the backrest is very high, which can absorb the shock, so "the school bus protects the children like an egg box. It is the safest road transportation. " The cost of installing seat belts on a typical school bus is estimated to be about $65,438+0,800. (Carol Scarzela, Tonvi Mehra, Jim Shian, Sachin Das)